Advances in Astronomy and Space Physics, Volume 5, Issue 1, PP. 17-20 (2015)
doi: 10.17721/2227-1481.5.17-20

Results of 5-year photometric monitoring
of the intermediate polar V2306 Cygni: correction
of the orbital period and evidence of 2-day periodicity

V. Breus1, K. Petrík2, S. Zoła3,4, A. Baransky5, T. Hegedus6

1Department of High and Applied Mathematics, Odessa National Maritime University, Odessa, Ukraine
2Hlohovec Astronomical Observatory, Hlohovec, Slovak Republic
3Astronomical observatory of the Jagiellonian university, Krakow, Poland
4Mt. Suhora Observatory, Pedagogical University, Krakow, Poland
5Astronomical Observatory, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
6Baja Astronomical Observatory, Baja, Hungary

Abstract
We present the results of 6 years of photometric monitoring of the magnetic cataclysmic variable V2306 Cygni (formerly known as 1WGAJ1958.2+3232) obtained at collaborating observatories. Using (O-C) analysis we tried to study variability of the spin period of the white dwarf, however we cannot make a firm conclusion based on the scatter. Simultaneously, using (O-C) diagram of orbital minima, we found that the value of 0.181545(3) days better corresponds with the light curve, than do previously published orbital period values. We also found that the variability has a 2.01 day period; this variability may be interpreted as possible precession of the accretion disk in this system.

Keywords:
stars: binaries: close - stars: novae, cataclysmic variables - stars: individual (V2306 Cygni) - stars: binaries: close - accretion disks - novae, cataclysmic variables